Version:           1.1.50 (using KDE Devel)
Installed from:    Compiled sources
Compiler:          GCC 3.4.4 
OS:                Linux

I was running Akregator, clicking around and I right clicked on a tab, I may have right clicked on the close button for that tab, I'm not really sure.

Using host libthread_db library "/lib/libthread_db.so.1".
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 27872)]
[KCrash handler]
#5  0x00000000 in ?? ()
#6  0xb6287d3d in QApplication::internalNotify (this=0xbfd0d200, 
    receiver=0x99ccca0, e=0xbfd0cda0) at qapplication.cpp:2635
#7  0xb6286f8d in QApplication::notify (this=0xbfd0d200, receiver=0x99ccca0, 
    e=0xbfd0cda0) at qapplication.cpp:2358
#8  0xb6bd62eb in KApplication::notify (this=0xbfd0d200, receiver=0x99ccca0, 
    event=0xbfd0cda0) at kapplication.cpp:550
#9  0xb7720764 in QApplication::sendEvent (receiver=0x99b7bc0, 
    event=0x99b7bc0) at qapplication.h:491
#10 0xb62899c9 in qt_dispatchEnterLeave (enter=0x0, leave=0x99ccca0)
    at qapplication.cpp:3604
#11 0xb6204eb5 in QApplication::x11ProcessEvent (this=0xbfd0d200, 
    event=0xbfd0d120) at qapplication_x11.cpp:3606
#12 0xb6222a66 in QEventLoop::processEvents (this=0x81aa380, flags=4)
    at qeventloop_x11.cpp:192
#13 0xb629fc43 in QEventLoop::enterLoop (this=0x81aa380) at qeventloop.cpp:198
#14 0xb629fb5e in QEventLoop::exec (this=0x81aa380) at qeventloop.cpp:145
#15 0xb6287ed1 in QApplication::exec (this=0xbfd0d200)
    at qapplication.cpp:2758
#16 0x08051ce3 in main (argc=0, argv=0x0) at main.cpp:110